Improved temper-screw for oil-wells



UNITED STATES PATENT OEE-ICE,

ROBERT B. MAGEE, OF VENANGO CITY, PENNSYLVANIA.

IIVlPROVED TEMPERSCREW FOR OIL-WELLS.

Specilication forming part of Letters Patent No. 85,46l, dated December 29, 18H8.

.To all whom it may concern,.- Be it known that I, ROBERT B. MAGEE, o

Venango Oity, in the county of Venango and State of Pennsylvania, have invented certain new and useful Improvements in Temper- Screws for Oil or Artesian Vells; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specication.

My invention relates to improvements in tempenscrews used in the operation of boring oil or Artesian wells; and it consists in constructing the brace-nut (through which the screw passes) in two pieces, which are held together by a clamp riveted or screwed in a suitable manner to the before-mentionednnt. The clamp is further provided with a set-screw of any suitable construction, form, or proportion, which passes through andrbears against the before-named nut, and so arranged that when the screw is slackened the nut will spring open.

.To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

- the boring-bar clamps; D, the eye by which the devices are supported.

The mode of operating my devices is as fola rope'or such like contrivance to the walking-beam of 'the boring-machine. The setscrew BL is slackened sufficiently so as to enable the brace-nut A to open wide enough to admit the tempenscrew C through without engaging the threads. The set-screw B2 is then tightened in such a manner as to engage the threads of the temper-screw C, which is then operated upon and with in the usual manner.

Temperscrew nuts have been heretofore made solid, and as the screw is of considerable length it takes an amount of labor and time to unscrew and reship the screw when required.v By the use of my devices the screw can be unshipped and reshipped with ease and in comparatively no time.

Having thus described the nature, construci tion, and operation of my improved temperscrew, what I claim, and desire to secure by Letters Patent, is

The combination ofthe screw O, with its links Cv and C', with the brace-nut A, clamp B, rivet B, and set-screw B2, when constructed, combined, arranged, and Aoperating substantially as herein described, and for the purpose set forth.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

ROBERT B. MAGEE.

Vitnesses: l

PERCEVAL BEcKETT, EDWARDWINTER.

lows, viz: The eye D is attached by means of,v 

